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June 14th, 2014, 02:46 PM
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Old Question Papers for JAM
Please provide me question paper for Joint Admission Test for admission in IIT colleges ? Here I am giving you question paper for Joint Admission Test for admission in IIT colleges below : Chemistry paper : Molecular shape of SOCl2 is Q.1 (A) square planar (B) trigonal pyramidal (C) triangular planar (D) T-shaped Number of three-centre two-electron (3c–2e) bonds present in diborane is Q.2 (A) 2 (B) 4 (C) 6 (D) 8 The lattice energy of LiF calculated from Born-Landé equation is –1000 kJ mol–1. Assume that for both LiF and MgO the Madelung constants, interionic distances and Born exponents have the same value. The lattice energy of MgO in kJ mol–1 is Q.3 (A) –4000 (B) –2000 (C) 2000 (D) 4000 The compound formed by dissolving elemental gold in aqua regia is Q.4 (A) AuCl (B) AuNO3 (C) H[AuCl4] (D) H[Au(NO3)4] Number of moles of ions produced by complete dissociation of one mole of Mohr’s salt in water is Q.5 (A) 3 (B) 4 (C) 5 (D) 6 The tetrachloro complexes of Ni(II) and Pd(II) respectively, are (atomic numbers of Ni and Pd are 28 and 46 respectively) Q.6 (A) diamagnetic and diamagnetic (B) paramagnetic and paramagnetic (C) diamagnetic and paramagnetic (D) paramagnetic and diamagnetic The total number of steps involved and number of beta particles emitted in the spontaneous decay of → respectively, are 238 92 U 208 82 Pb Q.7 (A) 8 and 6 (B) 14 and 6 (C) 6 and 8 (D) 14 and 8 Q.24 The half-life of any zero-order reaction is (A) independent of concentration (B) proportional to inverse of concentration (C) proportional to concentration (D) proportional to square of the concentration (a) Identify the most acidic compound from the following: CH3−CH3, CH2=CH2 and CH≡CH, and justify your answer. Draw overlap of the orbitals to show bonding in the most acidic compound using the concept of hybridization. (9) (b) Write a balanced chemical equation to represent acid-base reaction of orthoboric acid in water. Addition of ethylene glycol to aqueous orthoboric acid enhances its acidity. Explain the above statement using appropriate chemical equation Last edited by Neelurk; April 1st, 2020 at 12:05 PM. |
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